Jump Shot...

This is a relatively simple trick that is hard to master, but it is easy with a good keyboard. There are 3 kinds of jump shots, forward jump shots, back jump shots, and stationary jump shots. While in practice, there is little to no reason to do a jump shot, it is necessary when fighting some bosses as you avoid getting hit entirely. For example, jump shooting against a Yeti will prevent earthquake damage and back jump shooting against Jr. Balrog will take you outside of his range of fire.

Stationary jump shots are the easiest. Just hit shoot and jump at the same time. Some keyboards won't allow you to do this unfortunately, but the majority of keyboards will allow you to do it if the buttons are on different rows and columns. For example, if your attack button is on S and your jump button is on D.

Forward jump shots are the next easiest. While walking forward, do a jump shot.

Back jump shots are the hardest, and most people cannot do them consistently. Basically, while walking forward, jump, hit back, and shoot at the same time. Again, some keyboards simply don't allow this as they only allow one button to be hit at once. Additionally, this is not possible to do with snowshoes because you have to do this while you are "sliding". Go to El Nath to practice, slide forward, jump back and shoot all at once to see the effect. Snowshoes, prevent back shooting from working because snowshoes stop ALL sliding, note that even when you are not in El nath you still slide VERY minimally making back shooting possible and snowshoes prevent back shooting because snowshoes prevent ALL sliding.http://strategywiki.org/wiki/MapleStory/Bowman_Guide